Automated cleaning system for food processor and method

ABSTRACT

A self-contained system is provided for cleaning a food flow path in a food processor. The system can be operably engaged without requiring disassembly and reassembly of the food processor or can be operably engaged after a partial disassembly of the food processor. The system includes a control assembly for directing passage of a solution through the food processor without requiring constant operator oversight. The system can employ available positive pressure water supply, such as public utility water pressure to selectively and automatically push solutions, including rinses, backwards or forwards through a food flow path in the food processor, though typically countercurrent to the normal processing food flow. A manifold assembly includes an intake manifold and a distribution manifold, with an induction port and/or access port in the distribution manifold for introducing additives or agents into a controlled motive stream passing through the manifold assembly.

FIELD OF THE INVENTION

The present disclosure relates to an apparatus and method for cleaning afood processor and in a preferred configuration to cleaning the foodprocessor with a flow of solution that is counter current or reverse toa normal or forward processing through a food flow path in the foodprocessor. The present system thus provides a clean-in-place system(CIP) for the food processor.

BACKGROUND OF THE INVENTION

It is generally understood that fluid dispensing systems having fluidlines that carry fluids to a point of use need cleaning from time totime in order to ensure that no deposits or microorganisms collect inthe fluid lines. For example, beverage distribution systems employ theuse of beverage lines to carry beverages from beverage containers, ortanks, to dispensing units, which dispense the beverages to drinkingcontainers. If for some reason, these beverage lines are not cleaned ona regular basis, the collection of bacteria and deposits therein maycontaminate the beverages thereby making the beverages unsafe to drink.Moreover, in commercial restaurant settings, food and health regulationsactually require the periodic cleaning of beverage dispensing systems.

Similarly, food processors having a food flow path require periodicrinsing, cleaning and/or sanitizing.

It is well known to use portable chemical dispenser systems to clean outbeverage lines and other components of beverage dispensing systems. Withthese portable systems, users have become quite effective in meeting thevarious requirements imposed by food and health regulations. However,these prior art methods are extremely time consuming and require theattention of at least one person to manually move the chemical dispensesystems between each of the various beverage lines that require cleaningin a particular beverage dispense system. To add to the frustration,more and more restaurants are offering a larger variety of beveragesthan offered in years past, thereby making an extremely time demandingprocess even more demanding.

Therefore, a need exists for a system for selectively rinsing, cleaningand/or sanitizing a food flow path in a food processor with reducedoperator input and time, while providing enhanced reporting andmonitoring.

SUMMARY OF THE INVENTION

In one configuration a method is provided including the steps ofengaging a manifold assembly with a food processor having a food flowpath with a forward flow direction for processing a food product from anupstream end to a downstream dispensing port; and passing a pressurizedcleaning solution from the engaged manifold assembly through thedispensing port to pass the cleaning solution along a portion of thefood flow path in a reverse flow direction from the dispensing porttoward the upstream end.

It is further contemplated locating a dispensing valve in the food flowpath controlling flow of the food product in the forward directionpassing through the dispensing port, the dispensing valve moveablebetween an open position and a closed position, and the manifoldassembly including distribution manifold having a wash barrel sized tobe received within the food processor and move the dispensing valve tothe open position. It is understood the dispensing port is an extrusiondie. The steps can also include locating a bypass line at a forward flowoutlet of a hopper to pass the cleaning solution along the food flowpath in the reverse direction without contacting food product in thehopper.

A further step can include locating a pressure cover having a drain portto cover a hopper and sufficiently seal the hopper so that pressure ofthe cleaning solution entering the hopper is sufficient to forcematerial through the drain port in the cover.

The cleaning solution can be formed to include at least one of lacticacid, acetic acid, caprylic acid an levulinic acid and at least one ofsodium dodecyl sulfate and sodium lauryl sulfate. A cleaning agent canbe manually introduced into the manifold assembly.

The discharge port can be constructed as a pinch off valve having anopen position and a closed position.

A further method of cleaning a food processor having a forward flowdirection for processing a food product along a food flow pathterminating at a dispensing port, the food flow path including anenclosed length, is provided through the steps of passing a cleaningsolution in a reverse direction along at least a portion of the enclosedlength of the food flow path. The cleaning solution can be formed toinclude at least one of citric, lactic, malic, acetic, adipic, fumaric,glutaric, tartaric, fumaric, succinic, propionic, aconitic, sorbic,gluconic, ascorbic, and/or humic acids and at least one of sodiumdodecyl sulfate and sodium lauryl sulfate.

The method can include passing the cleaning solution in a reversedirection through the dispensing port to one of an inlet or hopper inthe food flow path, the one of the inlet or hopper being upstream of thedispensing port with respect to the forward flow direction.

Further, the method can also include passing the cleaning solutionthrough a bypass line in the one of the inlet or hopper to isolate foodproduct in the hopper from the cleaning solution. The steps can includemoving a dispensing valve of the food processor to an open position andpassing the cleaning solution through the open dispensing valve prior toentering the enclosed length. It is also understood the method caninclude passing the cleaning solution through an aperture in a bushingto expose an upstream side and a downstream side of the bushing to thecleaning solution.

The cleaning solution can be passed through a plurality of apertures ina beater blade within the enclosed length. Thus, the cleaning solutioncontacts a sealing surface in the food flow path, and the sealingsurface includes PTFE.

The cycling the cleaning solution and a rinse in the reverse directionalong the portion of the enclosed length can be automatically regulated.

The steps can include providing an aperture in the beater blade in thefood flow path for food product having at least an 8% fat content oradded particulates.

An apparatus is disclosed for cleaning a food processor having a forwardflow direction along a food flow path for processing a food product, thefood flow path including an enclosed length and terminating at adispensing port, the apparatus having a manifold assembly engaging thefood processor, the manifold assembly including an induction port, asolution input and an outlet configured to fluidly engage the dispensingport; and a control valve operably coupled to the manifold assembly toselectively pass a cleaning solution through the outlet and into thefood flow path in the reverse direction.

The apparatus can include a drain line fluidly connected to the floodflow path at a location upstream of the dispensing port relative to theforward flow direction. The apparatus can also include a bypass tubefluidly connecting to the food flow path at a location upstream of thedispensing port relative to the forward flow direction, the bypass tubeisolating food product in a portion of the food flow path from thecleaning solution.

A wand assembly can be included wherein the wand assembly has a wandmanifold, the wand manifold including a venturi, the wand manifoldconnected to the manifold assembly. In one configuration, a wash barrelis connected to the manifold assembly, the wash barrel sized to engageand seal the dispensing port of the food processor and permit flow intothe food flow path in a reverse direction.

A further apparatus is provided for cleaning a food processor having aforward flow direction along a food flow path for processing food, thefood flow path including an enclosed length and terminating at adispensing port, the apparatus includes an intake manifold having afirst inlet port and a first outlet port, a control valve intermediatethe first inlet port and the first outlet port, a controller connectedto the control valve for regulating flow through the control valve fromthe first inlet port to the first outlet port and a distributionmanifold having a first input port and a fluidly connected first outletport, the distribution manifold having an induction port fluidlyintermediate the first input port and the first output port.

In one configuration, the distribution manifold includes a venturiintermediate the first input port and the first output port and theinduction port is coupled to the venturi. The distribution manifold caninclude a check valve intermediate the first input port and the firstoutput port.

A manifold is also disclosed, the manifold having an intake manifoldhaving a first inlet port and a first outlet port, a control valveintermediate the first inlet port and the first outlet port, and adistribution manifold having a first input port and a fluidly connectedfirst outlet port, the first input port fluidly connected to the firstoutlet port and the distribution manifold having an induction portfluidly intermediate the first input port and the first output port.

The distribution manifold can include a venturi intermediate the firstinput port and the first output port and the induction port is coupledto the venturi. Also, a controller assembly can be provided andconfigured to releasably engage a food processor. In one configuration,a wash barrel can be connected to the distribution manifold, the washbarrel selected to engage a dispensing valve of a food processor. A wandassembly fluidly can be connected to the distribution manifold. Further,a check valve can be fluidly connected to the induction port.

A further method includes passing a regulated flow of a solution througha manifold assembly into a downstream portion of a food flow path of afood processor, the downstream portion of the food flow path beingdownstream of an upstream portion of the food flow path for flow in aforward direction of processing along the food flow path and exiting theregulated flow from the food flow path at an upstream portion of thefood flow path.

Yet another method includes controlling a flow of solution through amanifold assembly, introducing an additive through an induction port inthe manifold assembly to form a mixture and passing the mixture from themanifold assembly to pass along at least a portion of a food flow pathof a food processor in a direction counter to a processing directionalong the food flow path.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG. 1 is an exploded perspective view of a representative foodprocessor and the present system.

FIG. 2 is a side elevational view of a representative food flow path ina food processor showing a reverse flow as contemplated in the presentsystem.

FIG. 3 is a perspective view of a standalone configuration of thesystem.

FIG. 4 is a perspective view of an integral configuration of the system.

FIG. 5 is a perspective view of a hybrid configuration of the system.

FIG. 6 is an exploded perspective view of the controller assembly.

FIG. 7 is a perspective view of the intake manifold and the distributionmanifold of the manifold assembly.

FIG. 8 is a perspective view of the distribution manifold.

FIG. 9 is a top plan view of the flow path in a first configuration ofthe distribution manifold.

FIG. 10 is a top plan view of the flow path in a second configuration ofthe distribution manifold.

FIG. 11 is a top plan view of the flow path in a third configuration ofthe distribution manifold.

FIG. 12 is a top plan view of the flow path in a fourth configuration ofthe distribution manifold.

FIG. 13 is a top plan view of the flow path in a fifth configuration ofthe distribution manifold.

FIG. 14 is a perspective view of the stand-alone configuration operablyengaged with a food processor.

FIG. 15 is a perspective view of hopper lid for the system.

FIG. 16 is a perspective view of alternative drain lines and the hopperlid for the system.

FIG. 17 is a perspective view of a rear portion of a dispensinginterface and bushings of scraper blade.

FIG. 18 is a perspective view of a bushing for a scraper blade of thefood processor.

FIG. 19 is a perspective view of a modified scraper blade for the foodprocessor.

A first portion of a representative flow chart is shown as FIG. 20A.

A second portion of a representative flow chart is shown as FIG. 20B.

A third portion of a representative flow chart is shown as FIG. 20C.

FIG. 21 is a perspective view of a first configuration of a wandassembly.

FIG. 22 is an exploded perspective view of a second configuration of awand assembly.

FIG. 23 is a perspective view of the wand assembly of FIG. 22.

FIG. 24 is an exploded perspective view of a portion of the wandassembly of FIG. 23.

DETAILED DESCRIPTION OF THE INVENTION

Referring to FIG. 1, a representative food processor 10 is shown. Thefood processor 10 can be any of a variety of configurations including,but not limited to, frozen or chilled food product including but notlimited to, beverages such as sodas, beer or wine.

Food Processor

Referring to FIGS. 1 and 2, in one configuration, the food processor 10includes a food flow path 20 extending from an input or upstream end 22,such as a reservoir, feed tube or line inlets or hopper 32 to an outputor downstream end 24, such as a dispensing interface 26 from which thefood product exits the food processor. The food product passes, in anormal or forward direction along the food flow path 20, from the inputend 22 to the output end 24. In certain configurations, the dispensinginterface 26 includes at least one dispensing valve 28 for selectivelypassing or allowing passage of the processed food product from the foodprocessor 10. In certain configurations, the dispensing interface 26includes a plurality of dispensing valves 28, such as but not limited toone, two, three or more.

The food processor 10 can include any variety of devices, including butnot limited to soft serve machines, batch freezers, slush freezers,shake freezers, blended ice machines or food processors for extrudingfood products which include flows, grains or meats as well as liquiddispensers for beverages including soft drinks, diary drinks oralcoholic beverages such as fermented or distilled spirits. Thus, thefood product can be any corresponding product that may be temperaturecontrolled, mixed, blended, altered, processed or extruded.

In certain configurations as seen in FIGS. 1 and 2, the food flow path20 incorporates a number of processing stations 30 intermediate theupstream end 22 (such as the hopper) and the downstream end 24, (such asthe dispensing valve 28). For example, the processing stations 30 caninclude mixing chambers and temperature control chambers along the foodflow path 20. The mixing chambers include chambers for mixingingredients provided in a stream as well as ingredients from differentinputs such that the mixing chamber is the volume of initial combinationof different ingredients.

In further configurations, processing chambers 30, such as the mixingchamber and/or temperature control chamber of FIG. 2 can include a bladeor beater assembly 36 for agitation of the food product within thechamber, such as by rotation within the chamber.

Alternatively, the food flow path 20 can function primarily as a conduitfrom the input end 22 to the dispensing interface 26. In theseconfigurations it is understood the food processor 10 can functionmerely to selectively dispense the food product or can provide analteration or conditioning of the food product such as temperaturechange, carbonation as well as mixing (compounding). Examples of thefood processor 10 having these food flow paths 20 include dispensingdevices such as automated soda dispensers, beer and wine dispensers.

It is further understood the food flow path 20 can include a pluralityof inputs 22 with a corresponding smaller or a greater number of outputs24 depending on the intending operating function of the food processor10.

A representative food flow path 20 through the food processor, with thereverse direction indicated by arrows, is shown in FIG. 2.

While the input or upstream end 22 of the food flow path 20 is shown inFIG. 2, above the output or downstream end, it is understood the inputcan be located below the output, wherein the food product is pumped upfrom a supply, hopper or reservoir and along the food flow path to exitat the dispensing interface 26.

CIP System

The present clean in place (CIP) system 40 cooperates with the foodprocessor 10 to selectively pass a solution or a rinse through at leasta portion of the food flow path 20 intermediate the downstream end 24and the upstream end 22, wherein the introduced solution or rinsetravels counter current or reverse to the forward, or normal, directionthrough the food flow path.

The term solution is intended to encompass a cleaning, rinsing,disinfecting or sterilizing solution, as well as combinations ormixtures. For purposes of description, the present system is set forthin terms of using the solution, however it is understood the termsolution encompasses water (or other liquid) such as a rinse that may beemployed. The term solution also includes a gas or vapor such as steamas well as other disinfecting gas. It is understood, the present system40 can employ any of a variety of cleaning (and/or disinfecting)materials including liquids, gases and combinations thereof. Thesolution can be at least partly formed by an addition of an acidic orbasic wash concentrate to public utility water. Exemplary acidic washesfor the solution include citric, lactic, malic, acetic, adipic, fumaric,glutaric, tartaric, fumaric, succinic, propionic, aconitic, sorbic,gluconic, ascorbic, and/or humic acids and at least one of sodiumdodecyl sulfate and sodium lauryl sulfate.

In one configuration, the solution is presented to the system 40 at orwithin a given pressure range. However, it is understood the solutioncan be drawn from a reservoir or supply, wherein a pump (not shown) canbe used to pressurize the solution for presentation to the system 40.The solution, or select constituents of the solution are a motive fluidfor use in the system.

Referring to FIGS. 3, 6, and 7, the CIP system 40 includes a controllerassembly 50 and a manifold assembly 100, wherein the manifold assemblyincludes an intake manifold 110 and a distribution manifold 150 (FIG.7). The manifold assembly 100 can further include mounting hardware,such as arms 180.

The CIP system 40 can assume a variety of configurations. In oneexample, the CIP system is (i) referring to FIG. 3, a standalone systemwherein the controller assembly 50 and the manifold assembly 100 are asingle unit that is a separate construction from the food processor 10and releasably engages the food processor, (ii) referring to FIG. 4, anintegral system, wherein the controller assembly and the manifoldassembly are substantially incorporated within or integral with the foodprocessor (either as an after-market or original equipment manufacturer)or (iii) referring to FIG. 5, a hybrid system, wherein certain portionsare integral with or embedded in the food processor and certain portionsare separate or interchangeable—such as the distribution manifold 150being integral (or coupled to) with the food processor 10 and the intakemanifold 110 along with controller assembly being separate(interchangeable).

Referring to FIG. 4, in the integral configuration, the system 40 iseffectively an internal mechanism to the food processor 10. By embeddingthe system 40 into the food processor 10, the system becomes a componentof the food processor. The integral configuration eliminates the need ofan operator to engage the system 40 with the food processor 10 everytime cleaning is to be performed. The integral configuration alsosimplifies the interface of the manifold assembly 100 and the foodprocessor 10. By combining the system 40 into the food processor 10, adoor assembly 12 of the food processor can incorporate the manifoldassembly to the food processor itself, only requiring an external, orinternal liquid and/or gas supply to perform the desired cleaningprocess.

In the hybrid modular configuration, interchangeability is providedbetween different designs of the food processor 10. That is, as seen inFIG. 5, the intake manifold 110 and the controller assembly 50 areseparated from the distribution manifold 150, yet operably connected bytubing or piping (umbilical) allowing for functionality as set forthbelow. The hybrid configuration allows for quick change out of thedistribution manifold 150, while retaining standard controller assembly50 (and intake manifold 110) configurations across multiple platforms.The controller assembly 50 can be mounted separately from the foodprocessor 10 to provide even greater design flexibility, and reductionof overall weight of the combined system.

Controller Assembly

Referring to FIG. 6, the controller assembly 50 includes controlcircuitry 60, a user interface and a control valve 90 (FIG. 7), whereinat least some of the components are retained in a housing 52 and thecontrol valve operates in the intake manifold 110. In one configuration,the housing 52 is water or splash resistant and in certainconfigurations water or splash proof (for intended operatingparameters). In certain configurations, the controller assembly 50 alsoincludes a power supply 54 and a communications module 70, as seen inFIG. 6.

As seen in FIG. 7, the intake manifold 110 includes an inlet port 112for receiving a pressurized source of solution, such as publicallyavailable water, into the system 40 and a plurality of outlet ports 114,wherein the outlet ports are fluidly connected to the distributionmanifold 150. As seen in the configuration in the accompanying Figures,the intake manifold 110 includes a single inlet port 112 and two outletports 114. However, it is understood the intake manifold 110 can includea plurality of inlet ports 112 and a plurality of outlet ports 114 or aplurality of inlet ports and a single outlet port.

Referring to FIG. 7, at least one control valve 90 is located fluidlyintermediate the inlet port 112 and the outlet ports 114. In oneconfiguration, the intake manifold 110 includes a single inlet port 112and two outlet ports 114, wherein the control valve 90 regulates whichoutlet port is fluidly connected to the inlet port. In a furtherconfiguration, as seen in FIG. 7, the controller assembly 50 includes afirst 90 a and a second control valve 90 b, wherein flow to each outletport 114 is regulated by a corresponding control valve.

The control valves 90 are configured to selectively pass water(solution) from the inlet port 112 through one or a plurality of theoutlet ports 114. That is, the control valves 90 are moveable to providea flow (including partial or full flow) and no-flow status.

The control circuitry 60 of the controller assembly 50 is operablyconnected to the control valves 90, the user interface 80 and the powersupply 54 to provide for control of the passage of the pressurized waterfrom a given inlet port 112 to a given outlet port or ports 114 of theintake manifold 110.

Referring to FIG. 6, the control circuitry 60 can include timingcircuits 62 as well as counter circuits 64 for controlling the passageof material from the controller assembly 50, and hence the CIP system40. It is understood the control circuitry 60 can incorporate thefunctionality of commercially available sprinkler systems.

The control circuitry 60 can be provided in a dedicated processor orprogrammed into a processor 66, such as a PCB microprocessor orcontroller.

As shown in FIG. 6, the control circuitry 60 can also include acommunication module 70 which can include readers 72 such as contact orcontactless readers for communicating with RFID or RFID type tags fordata storage/identification/controller manipulation. It is alsocontemplated the control circuitry 60 can include memory 74, such as butnot limited to nonvolatile memory (NVM), wherein the readers allow forreceiving internal software NVM/firmware updates.

The communication module 70 and/or control circuitry 60 can include, butis not limited to, capability of bluetooth or Wi-Fi type communicationprotocol. Thus, the communication module 70 is capable of sending andreceiving data for control specific functions pertaining to theperformance of the system 40 and/or data transfer to an external devicecapable of receiving and storing information externally for latermanipulation. The communication module 70 can also be configured tocommunicate/control extensions of the system 40 that are not physicallyattached to the housing 52, such as controlling an external valve(s)that also redirects liquid and/or gas based agents such as forintroduction through the manifold assembly 100.

The communication module 70 can include the reader 72, such as awireless, RFID or contactless reader. In one configuration, the agentsintroduced into the system 40 or employed by the system can beaccompanied by a tag or card, such as an RFID tag that can be read bythe communication module 70. The control circuitry 60 can then identifyand verify the additive to ensure compliance with cleaning procedures.Thus, the system 40 can be programmed to operate only with material froman original equipment manufacturer.

The communication module 70 can be incorporated into the controlcircuitry 60 or can be a separate module. The communication module 70provides for communication with an operator to and from the controlcircuitry 60 through any available channel including, but not limited towireless and wireless networks such as blue tooth, Wi-Fi, cellular,satellite as well as local WI-FI.

The communication module 70 can also be configured to communicatedirectly with the food processor 10. It is known that certain foodprocessors 10 include a control system for monitoring and reporting,both for diagnostics and processing. The communication module 70 of theCIP system 40 can be selected to communicate directly with the foodprocessor 10 and thus respond to use cycles and operation parameters ofthe food processor to provide efficient and timely cleaning of the foodprocessor under an automated cycle without requiring operatorintervention. Thus, as the CIP system 40 can provide automated cleaning,the controller assembly 50 can record operations and thereby provide arecord of food processor cleaning.

The wireless communication via the communication module 70 andassociated apps of the user interface provide an external control of thesystem 40. Thus, an operator can remotely control the cleaning process.In certain constructions, the user interface 80 is sufficiently waterresistant to preclude the introduction of liquid into the system 40through the user interface. Thus, an operator can program or use thesystem 40 with damp or wet hands without precluding the intendedoperation of the system.

The user interface 80 can be any of a variety of configurations,including touch screen, button or switch operated or application driven,wherein the application is remotely accessed by an operator. Thus, theuser interface 80 can include smart phones, tablets and other portablewirelessly communicating devices and associated apps. The user interface80 encompasses an interface capable of receiving physical user inputssuch as a TUI (tactile user interface), shown in FIG. 6.

The power supply 54 can be any of a variety of constructions. In oneembodiment, the power supply 54 is a battery, which can be eitherdisposable or rechargeable (such as by a power docking station),depending on the intended operating environment of the system.Alternatively, the power supply 54 can be drawn from availableelectrical supply, wherein commercially available converters ortransformers are intermediate the available power supply and the controlcircuitry 60. In a further configuration, the power supply 54 can beprovided by a wireless interaction such as inductive power transfer,either to directly power or to charge a battery that then powers thesystem. Alternatively, the power supply 54 can be provided by solarenergy, hydrogen conversion or scrubbing of available waste energy.Thus, the power supply 54 can be dry cell batteries, AC/DC inlet fromwall outlet, rechargeable power supplies, either removable or embeddedin the housing as well as rechargeable by a cable or wireless chargingtechnology.

Manifold Assembly

As set forth above and shown in FIG. 7, the manifold assembly 100includes the intake manifold 110 and the distribution manifold 150.Referring to FIG. 8, the distribution manifold 150 is shown having anumber of inputs 154 corresponding to the number of outlets 114 of theintake manifold 110. In one configuration, as seen in FIG. 8, thedistribution manifold 150 includes a first and a second input 154 a, 154b and a plurality of output openings 156. The specific number of inputs154 and outputs 156 is dictated by the intended operating environment ofthe system 40, and is not limited to the illustrated configuration.

The first and second inputs 154 a, 154 b correspond to and operablyalign with the outlet ports 114 a, 114 b of the intake manifold 110 forreceiving flow from the corresponding first and second outlet ports ofthe intake manifold.

The output openings 156 are in fluid communication with the first andthe second inputs 154 a, 154 b. In one configuration, the number ofoutput openings 156 corresponds to the number of dispensing interfaces26, dispensing valves or processing paths of the food processor 10.

Referring to FIG. 8, the manifold assembly 100 and specifically thedistribution manifold 150 also includes an induction port 170 forintroducing an agent into the solution. The induction port 170 isfluidly intermediate the input 112 and the output 156 of the manifoldassembly 100 and particularly the input 154 and output 156 of thedistribution manifold 150.

In one configuration, pressurized water is the motive fluid and theinduction port 170 introduces an additional component or agent to thesolution.

The agent is passed through the induction port 170 by any of a varietyof mechanisms, such as pumping, metering or venturi. In the venturiconfiguration, the manifold assembly 100, such as the distributionmanifold 150, includes a venturi (not shown), wherein the solution ormotive fluid passes through the venturi to create a reduced pressure,wherein the reduced pressure is used to introduce the agent through theinduction port 170. Alternatively, a pump or metering device can be usedindependently or in conjunction with the venturi of the manifoldassembly 100 to introduce the agent into the solution.

As seen in FIGS. 9-13, each input 154 is fluidly connected to eachoutput 156 of the distribution manifold 150 (and hence manifold assembly100) and one induction port 170, such as the venturi, is fluidlyintermediate each input and output.

As each flow path between the input 154 and the downstream output 156 inthe distribution manifold 150 (or manifold assembly 100) can include oneventuri (not limited to one), material or a gas may be drawn into thepassing flow. Thus, a plurality of induction ports 170 (such as aventuri) can be located along the flow path in the manifold assembly 100between a given input and output. The plurality of induction ports 170provides for the introduction of a plurality of agents to the motivefluid. Specifically, in one configuration, a low pressure port of theventuri is fluidly connected to a supply or source of an agent, whereinthe agent can be liquid, solid or gas, such as ambient pressure air. Asambient air is drawn into the venturi and the flow, bubble agitation isformed. The downstream induction port 170 (such as the low pressure portof the second venturi between the input and the output) is fluidlyconnected to a supply or source of the agents, such as cleaning,disinfecting or sterilizing agents, so that the introduced agent ismixed into the aerated flow.

In further configurations, it is contemplated the distribution manifold150 (or manifold assembly 100) can include a single induction port 170fluidly intermediate the input and the output. Alternatively, each flowpath in the distribution manifold 150 (or manifold assembly 100) betweenthe input and the output can include a corresponding induction port.Thus, different food flow paths can be exposed to different solutions,or processing parameters.

Referring to FIGS. 9-13, the distribution manifold 150 can include avariety of configurations of input(s) 154, induction port(s) 170,outputs 156 and interconnecting flow paths. These configurations can beselected to provide predetermined flows from each of the outputs 156under anticipated operating conditions. Thus, depending on the desiredperformance, each output 156 can provide the same flow rate. That is,the construction of the distribution manifold 150 can be tuned toprovide the desired flows from the outputs 156.

In a first configuration of FIG. 9, the distribution manifold 150includes at least one but may have a plurality of inputs 154. One ormore of the inputs 154 can include at least one induction port 170 toallow the addition of other gas or liquids to the solution. Theinduction port 170 can cooperate with a venturi or an active mechanismsuch as a pump or meter. Alternatively, agents (gas or liquid) can bepassed through the induction port 170 by gravity feed, such as bylocating a source of the agent above the induction port. Further, anoperator can temporarily halt flow, and manually introduce the agent tothe system through an access port.

Further, the flow path in the distribution manifold 150 can include areturn portion 158 after (downstream of) the most downstream output 156,wherein the return portion is fluidly connected to the input 154upstream of the most upstream output. The incorporation of the returnportion 158 as seen in FIG. 9, allows each of the outputs 156 to have anequal cross sectional area, or diameter for circular outputs, whereinthe flow from each output is equal. This eliminates the need to tune theoutlet ports 156 with different diameters, which would otherwise berequired in order to get the same amount of flow from each output.

In a further configuration of FIG. 10, the flow path in the distributionmanifold 150 does not include the return portion 158. To provide forequal flow rate from each output 156, the cross sectional area of eachoutput is formed to accommodate the associated pressure at theparticular location in the flow path. Specifically, the outputs 156exposed to higher flow pressures in the distribution manifold 150 have asmaller cross sectional area than outputs exposed to lower pressures.Again, the distribution manifold 150 can include one or a plurality ofinputs 154. One or several inputs 154 can include at least one inductionport to allow the addition of other liquids and/or gas. Without thereturn portion in the flow path in the distribution manifold 150, thecross sectional areas of the outputs 156, such as output diameters, isspecifically tuned per application in order to make the flow equalbetween outputs.

In a further configuration of FIG. 11, the distribution manifold 150again includes at least one, but may have several inputs 154, wherein atleast one of the inputs includes an induction port 170 to allow theaddition of other liquids and/or gas. In this configuration with inputs154 symmetrically centered between the outputs 156, the cross sectionalarea of the outputs (output diameters) is specifically sized, tuned, perapplication in order to make the liquid flow equal between outlet ports.

It is also contemplated an access port or hatch, detachable orrefillable reservoir or dispenser, can be provided along with, or inplace of the induction port 170 for the operator to introduce agents oradditives into the flow path.

In another configuration of FIG. 12, the distribution manifold 150includes at least one, but may have a plurality of inputs 154. At leastone of the inputs 154 can include the induction port 170 to allow theaddition of other liquids and/or gas to the solution. In thisconfiguration with input symmetrically centered with the output 156, notuning of the output is required.

Alternatively, as seen in FIG. 13, the distribution manifold 150includes at least one, but may have several inputs 154, wherein at leastone of the inputs includes an induction port 170 to allow the additionof other liquids and/or gas. In this configuration having only a singleoutput 156, no tuning of the outlet port is required.

However, it is understood the tuning of the distribution manifold 150may not always be required for the system 40 to be operational, and suchtuning can be selected to provide enhanced control over the exposure ofthe food processor 10 to the solution. Particularly, if regulation ofthe flow from each output 156 is not critical, the tuning of thedistribution manifold 150 can be decreased.

In a further configuration, the manifold assembly 100 (including atleast one of the intake manifold 110 and the distribution manifold 150)or an input 112 to the manifold assembly can include an ultrasonicgenerator 180 to impart pressure waves in the solution sufficient tocreate cavitation in the solution. The ultrasonic generator 180 can beinternal or external to the food processor 10 or the system 40, thusintroducing cavitation in the solution at any location along the foodflow path 20. As known in the art, the ultrasonic generator 180 can bepiezoelectric or magnetostrictive transducers as well as sonifier orsonicators, wherein the sonication can be direct or indirect. Thus, thesolution can be in contact with a probe or can be isolated or separatedfrom the probe. Commercially available sonifier or sonicators can beemployed in the system.

In one configuration, each output of the distribution manifold 150includes a wash barrel 160, as shown in FIG. 7, sized to be at leastpartially received within the dispensing interface 26 of the foodprocessor 10. The wash barrel 160 is configured to physically contact acorresponding dispensing valve 28 of the food processor 10, such thatupon operable engagement of the manifold assembly 100 with the foodprocessor, each wash barrel contacts a corresponding dispensing valve ofthe food processor and disposes the corresponding dispensing valve in anopen (or flow passing) position.

The wash barrel 160 includes or defines a flow path extending along alongitudinal dimension of the wash barrel. Depending upon the specificdesign of the dispensing valve 28 in the food processor 10, the washbarrel 160 includes a transverse exit port 161 for passing liquid fromthe flow path. The wash barrel 160 also includes an engaging surface 162for engaging the dispensing valve 28 and moving the dispensing valve tothe open position in response to operable engagement of the wash barreland the dispensing interface 26 of the food processor 10. The washbarrel 160 also forms a sealed connection with the dispensing interface26 to provide for fluid transfer to the food flow path 20.

In an alternative configuration, dispensing pistons which reside withinthe dispensing interface 26 can be first removed before installing themanifold assembly 100 (and the wash barrel(s) 160). Thus, in thisconfiguration while the wash barrels 160 do not include the engagingsurface 162 for engaging the dispensing valves 28, the wash barrel(s)include a sealing surface 164 for contacting the food processor 10 tocreate a seal for ensuring passage of the solution into the food flowpath 20.

The manifold assembly 100 includes an interconnect mechanism 120 foroperably engaging and retaining the manifold assembly, and any affixedcomponents relative to the food processor 10, and specifically thedispensing interface 26. As shown in FIG. 14, a pair of mounting arms122 are rotatably mounted to the manifold assembly 100, wherein themounting arms can be moved between a release position and an engagedposition. In the engaged position, the mounting arms 122 operably retainthe manifold assembly 100 and the attached controller assembly 50relative to the food processor 10. It is understood that in alternativeconfigurations, such as the system having a single wash barrel 160, thesystem 40 could rotate or snap into operable engagement with the foodprocessor 10 without requiring independent mounting arms 122 or movementof such mounting arms.

For those configurations employing a gas or vapor as the solution, suchas steam or disinfecting gas, the control assembly 50 and manifoldassembly 100 are configured to provide sufficient pressurization of thefood flow path 20.

In configurations of the food processor 10 in which the hoppers 32define the upstream end 22 of the food flow path 20, one configurationas shown in FIG. 16, the system 40 includes a pressure cover 42 forsubstantially sealing the upstream end of hopper-by-pass tube(s) 44 andtubing, which extend from the hopper(s) product inlet orifice(s). Thepressure cover 42 includes a lid 43 and seated seal 45 for engaging acorresponding surface adjacent a periphery of the hopper 32 or engagingthe periphery of the hopper. The pressure cover 42 also includes a drainport for passing solution that has flowed counter current through thefood flow path 20. A drain line(s) is connected to the drain port todirect the passed solution to a catch basin or disposal. The pressurecover 42 and the by-pass tube(s) 44 sufficiently seal the hopper(s) andinlet orifice(s) so that pressure of the cleaning solution entering thehopper by-pass-tube(s) 44 is sufficient to force material into andthrough the drain port. As seen in the left hopper of FIG. 16, an inserthopper, with associated drain line, can be temporarily located withinthe system hopper. The insert hopper/or hopper sealed cover 42 can belocated within/or top mounted to the food processor hopper, wherein theinsert/or cover hopper is sized to be spaced/or seal fitted from thefood processor hopper so that solution can pass between/or within thehopper(s) and into the insert/or within the hopper itself.)

Referring to FIG. 15, the by-pass tube(s) 44 sufficiently seal hopper(s)outlet orifice(s) 34 so that pressure of the cleaning solution enteringthe hopper by-pass-tube(s) is sufficient to force material into andthrough the drain port. The bypass tube 44 connects to the foodprocessor 10 by inserting into the product mix ports 34 in the bottom ofthe hopper 32. The bypass tubes 44 can be held in place by either active(mechanical) or non-active (interference fit) engagement. The connectedbypass tubing 44 dispenses the machine waste into a catch basin or floordrain.

In a further alternative configuration, an insert hopper/or hoppersealed cover 42 can be located within/or top mounted to the foodprocessor hopper, wherein the insert/or cover hopper is sized to bespaced/or seal fitted from the food processor hopper so that solutioncan pass between/or within the hopper(s) and into the insert/or withinthe hopper itself.)

Bypass Assembly

The bypass assembly of the present system fluidly connects to the foodflow path 20 in the food processor 10 intermediate the upstream end 22and the downstream end 24 of the food flow path. The bypass assemblyincludes the bypass line 44 fluidly connected to the food flow path 20intermediate the upstream end 22 and the downstream end 24 of the flowpath. That is, as seen in FIG. 15, the bypass line 44 connects to thefood flow path 20 at a location downstream (in the normal or forwarddirection of product along food flow path in the food processor) andterminates at a point outside of the food flow path. Referring to FIG.15, in one configuration, the bypass line 44 fluidly connects to thefood flow path 20 at the exit of the hopper 32 and terminates in a drainor catch basin. Thus, solution introduced into the food flow path 20 atthe dispensing interface 26 and flowing in the reverse direction alongthe food flow path passes into the bypass line 44 without contacting thematerial in the hopper 32 and the solution is guided from the foodprocessor 10 through the bypass line without contacting any material inthe hopper.

In select configurations shown in FIG. 17, the food processor 10includes a bushing or bearing 14 for retaining or locating a beaterassembly 36 as seen in FIG. 1. The bushing 14 provides a wearableinterface between a rotatable beater bar 38 and the mandrel or chillertubes. The present system employs a modified bushing 14 having a flowport 15 allowing water or solution to flow to both sides (upstream anddownstream side) of the bushing. Thus, solution from the manifoldassembly 100 can migrate between the bushing 14 and the surroundingportion of the food processor 10 thereby allowing more complete exposureof the food path to the introduced solution. That is, the bushing 14 hasan internal surface and an external surface, wherein the flow port 15connects the internal surface to the external surface.

In a further configuration shown in FIGS. 18 and 19, the present systemmodifies the beater blade 38 of the food processor 10. Specifically, thepresent beater blade 38 includes a plurality of flow holes 39 throughthe beater blade, wherein the flow holes permit the introduced solution,flowing in the reverse direction along the food flow path 20, to migratebetween the beater bar in the beater blade, thereby providing furthercleaning. It has been found advantageous to employ the apertures 39 inthe beater blade 38 for food product having a relatively high fatcontent, such at least 8% as well as 10 to 12% or more fat content. Forfood product having particulate matter, such as seeds or solid foodparticles (cookies in dairy dessert), the beater blade 38 is employedwithout flow holes. In a further configuration, the beater blade 38 ismodified to include only one surface contacting member to a beaterbarrel of the food processor 10. That is, only a single beater bladeedge contacts the beater barrel. As seen in the FIG. 18, the beater barsupports two beater blades 38, however the modification removes one ofthe blades so only one edge of one beater blade contacts the barrel.

In a further alternative structure, a sealant is located between thebeater bar and the beater blade 38 to form a self-conformingconfiguration of the beater blade and forms a one-to-one seal betweenthe beater bar and the beater blade, thereby reducing migration ofproduct between the beater bar and the beater blade. A commerciallyavailable food grade sealant can be used between the beater blade 38 andthe beater bar. This reduces the amount of fluid used to clean themachine and reduces the cycle time of the system 40. It is understoodany combination of these beater blade, beater bar configurations can beemployed.

Referring to FIG. 1, the present system also optionally self-lubricatingO-rings and seals 16 in place of traditional food grade grease forsealing. The use of self-lubricating O-rings and seals 16 allows for theelimination of a food safe lubrication to place the food processor in anoperable status. As the reintroduction of the food grade lubricant isnot necessary after cleaning, the present system 40 provides for reducedmaintenance time. Satisfactory self-lubricating O-rings and seals 16include commercially available plastic or elastomer O-rings and sealsimpregnated with approximately 3%-5% polytetrafluoroethylene (PTFE) orbearing, but not limited to a PTFE coating as commercially available.The present O-rings and food contacting sealing surfaces 16 include aPTFE (Teflon® coating a registered mark of E. I. Du Pont De Nemours andCompany Corporation) coating or impregnation, thereby removing the needfor removal and reapplication of food grade grease.

Operation

In operation, the operator mechanically connects the manifold assembly100 to the dispensing interface 26 of the food processor 10 by engagingthe mounting arms 122 with the food processor, as shown in FIG. 14. Thewash barrels 160 contact the corresponding dispensing valves 28 of thefood processor 10 and upon operable engagement of the manifold assembly100 to the food processor 10, the wash barrels dispose the dispensingvalves to the open position. One induction port 170 of the manifoldassembly 100 is connected to a supply of cleaning, disinfecting orsterilizing solution as depending upon the intended cleaning process,and the remaining induction port may be allowed to aspirate ambient air.The inlet port 112 of the intake manifold 110 is connected to the publicutility water supply or a portable pressurized water supply and thus apositive pressure is placed upon the control valves 90.

The operator then programs the controller assembly 50 via the availableuser interface 80 for the desired cleaning (wash)—rinse cycles. Forexample, the operator can select from one of three options: (i) Rinseonly; (ii) Wash only and (iii) Rinse-Wash cycle. Alternatively a secondand final rinse cycle can be performed if the operator desires to rinseout the wash solution residual prior to reintroducing the food productmix back into the machine. That is, the controller assembly 50 caninclude a number of predetermined rinse, wash or combination cyclesalong with preset soak times.

Further, depending upon the intended cleaning with respect to thematerial in the hopper(s) 32 of the food processor 10, the bypass lines44 may be fluidly connected to the ports 34 of the hoppers such thatintroduced solution passes through the bypass tubes 44 rather thancontacting the hopper and thus does not contact any material within thehoppers, thereby permitting the operator to minimize the waste of foodproduct, while reducing entire cleaning cycle time.

Alternatively, if the hoppers 32 are part of the entire food processorcleaning process, the bypass lines 44 are placed in the hoppers afterthe operator cleans the hopper using the wand assembly and/or sanitationwipes. The drain line(s) are connected to the drain port(s).

The controller assembly 50 selectively controls the control valves 90corresponding to the input program to pass water or solution through thewash barrel(s) 160 and into the open dispensing valve(s) 28 of the foodprocessor 10. The introduced water/solution passes countercurrentthrough the food flow path 20 in the food processor 10 and the aperturesin the bushings 14 and beater blades 38 (if employed).

The controller assembly 50 is also operatively connected to theultrasonic generator 180 for selectively operating the generator tointroduce corresponding cavitation in the solution.

Additionally or alternatively, the controller assembly 50 can controlthe optional aspiration of air into the flow via the induction port 170including a first venturi. Thus, the controller assembly 50 provides forthe selective introduction of bubbles into the counter current flow,wherein the bubbles enhance the cleaning action of the rinse. It isbelieved the bubbles increase turbulence and kinetic energy in thepassing flow, thereby enhancing the cleaning action.

The cleaning solution ultimately passes into the bypass tubes 44 and maybe captured or disposed of down the available drain. Alternatively, ifthe bypass lines 44 are not employed, the solution passes from the drainport 47 in the pressure cover 42 for disposal.

Upon completing the programmed cycles, the present system 40automatically terminates the flow of solutions—rinses through the foodprocessor. The present system 40 can be then disconnected from thedispensing interface 26 of the food processor 10 and the bypass tubes 44removed from the hopper(s) 32 (or the pressure cover 42 removed) therebyallowing for normal operation of the food processor, subsequent to thepresent clean in place.

Alternatively, for those configurations of the integral system, valvesinterconnecting the manifold assembly and the food flow path are closed,thereby isolating the system from the food flow path.

A representative flow chart is shown through combinations of FIGS. 20A,20B, and 20C.

Wand Assembly

Referring to FIG. 21, the present system can further include a wandassembly 200 comprising a wand manifold 220 and a wand 260, wherein thewand can be connected to the wand manifold by an interconnecting hose(s)250.

The wand manifold 220 includes a separate water inlet port 222 such asfor receiving water from the public utility supply or other pressurizedsources.

Referring to FIGS. 22 and 24, the wand manifold 220 includes aninduction port 230 such as a venturi 232 for aspirating or drawing in acleaning, disinfecting or sterilizing solution, wherein the solution ispassed for selective dispensing by the wand 260.

In further configurations, the wand manifold 220 can allow for anoptional supply of fresh water supply. Alternatively, the ability toselect substitute cleaners is set by the configuration of the wand 260or wand manifold 220 itself by the operator. Thus, a plurality ofventuri and/or metering pumps can be connected to the wand manifold 220.In the configuration using a metering pump, a flow meter(s) can be usedin conjunction with an onboard micro-processor, which could be poweredin many different ways i.e. replaceable batteries, re-chargeablebatteries, directly connected to a continuous power supply. The wandassembly 200 can also contain a communication module 270 as set forthabove, and thus have for example RFID technology that records andconfirms OEM solutions are being used to keep the integrity of thesystem as intended.

Thus, the wand manifold 220 can be as simple as a clear tube, such as aclear tube, for the purpose of housing at least one inlet induction portinto the directed flow path. In another configuration, the wand manifold220 can be intelligent with flow sensor(s), temperature sensor(s),chemical sensor(s), valve(s), microprocessor(s) capable of controllingand sensing flow through the wand manifold and reporting information inreal time and post processing by means of the communication module asset forth above, such as RFID, Bluetooth, Wi-Fi.

In a further configuration as seen in FIGS. 22 and 23, the wand assembly200 can be integrated into the CIP system 40, so that the controllerassembly 50 can operate both the manifold assembly 100 and the wandassembly 200. Further, the manifold assembly 100 can be fluidlyconnected to the wand assembly 200 so that the composition of solutionflow through the wand assembly is controlled by the control circuitry 60of the controller assembly 50.

In operation of the wand assembly 200, actuation of the wand permitsflow through the induction port 170 or venturi 172.

In a further configuration, the wand assembly 200 can be selected toaccommodate two different and selectable flow rates. The wand 260 andventuri 172 are selected such that (i) a first flow rate which does notdraw in the additive (agent)—thereby providing an additive free rinseand (ii) a second flow rate which draws the solution into the passingflow. The flow rates can be provided by operating positions of the wand260, such as a position of the tip or an orientation of the tip ormechanical flow control such as valving or selective flow obstruction.

It is further contemplated the present system may be stored on a rack280 for retaining the controller assembly 50, the wand manifold 220 aswell as supplies of cleaning solution and the wand assembly.

Although the present system 40 has been set forth as providing forpassage of the solution counter current (or reverse) of the forward flowthrough the food flow path 20 in the food processor 10, it is understoodthe system can be operably located at an upstream position or upstreamend of the food flow path to pass the solution in a forward directionalong the food flow path.

It is also contemplated that agents or additives can be introduced bythe operator introducing such agents or additives through an access dooror port during a flow or no-flow status of the system 40.

The invention has been described in detail with particular reference toa presently preferred embodiment, but it will be understood thatvariations and modifications can be effected within the spirit and scopeof the invention. The presently disclosed embodiments are thereforeconsidered in all respects to be illustrative and not restrictive. Thescope of the invention is indicated by the appended claims, and allchanges that come within the meaning and range of equivalents thereofare intended to be embraced therein.

1-20. (canceled)
 21. A soft serve machine comprising: (a) a first foodflow path having an upstream section and a downstream section forpassing a first food product in a forward flow direction from theupstream section to the downstream section; (b) a first temperaturechange station in the first food flow path intermediate the upstreamsection and the downstream section, and (c) a manifold assembly havingan input receiving a solution into the manifold assembly and a firstoutput passing the solution from the manifold assembly, the manifoldassembly configured to engage the soft serve machine to locate the firstoutput within the first food flow path to introduce the solution intothe first food flow path, wherein the solution passes along a portion ofthe first food flow path in a reverse flow direction.
 22. The soft servemachine of claim 21, wherein the manifold assembly includes a controlvalve for selectively passing the solution from the input to the firstoutput.
 23. The soft serve machine of claim 21, wherein the firsttemperature change station lowers a temperature of the first foodproduct.
 24. The soft serve machine of claim 21, wherein the manifoldassembly is configured to releasably engage the soft serve machine. 25.The soft serve machine of claim 21, wherein the manifold assemblyincludes a first wash barrel sized to be received within a portion ofthe first food flow path, the first wash barrel having the first outputpassing the solution from the manifold assembly, the wash barrel beingsized to locate the first output in the first food flow path.
 26. Thesoft serve machine of claim 21, further comprising a bypass lineconfigured to connect to the first food flow path and isolate a portionof the food flow path from the solution.
 27. The soft serve machine ofclaim 21, wherein manifold assembly is configured to locate the firstoutput fluidly intermediate the first temperature change station and thedownstream section.
 28. The soft serve machine of claim 21, wherein theupstream section includes a source of the first food product.
 29. Thesoft serve machine of claim 21, further comprising a supply of solution,the supply of solution being internal to the soft serve machine.
 30. Thesoft serve machine of claim 21, further comprising a supply of solution,the supply of solution being external to the soft serve machine.
 31. Thesoft serve machine of claim 21, further comprising a controller assemblyand a control valve for selectively passing solution through themanifold assembly.
 32. The soft serve machine of claim 31, furthercomprising a power supply for implementing an actuation of the controlvalve.
 33. The soft serve machine of claim 21, wherein the manifoldassembly includes an induction port intermediate the input and the firstoutput.
 34. The soft serve machine of claim 21, further comprising oneof a first blade and a first beater assembly in the first temperaturechange station.
 35. The soft serve machine of claim 21, wherein thesolution flow along a portion of the first food flow path in the reverseflow direction includes a portion of the first temperature changestation.
 36. The soft serve machine of claim 21, further comprising adoor assembly, wherein the manifold assembly is integral with the doorassembly.
 37. The soft serve machine of claim 21, wherein the manifoldassembly is integral with the soft serve machine.